Superseded by MaximInterface.

Diff: Masters/DS248x/DS2482EightChannel/DS2482EightChannel.cpp

Revision:

92:aa40c49b8563

Child:

104:3f48daed532b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Masters/DS248x/DS2482EightChannel/DS2482EightChannel.cpp	Mon Jun 20 20:02:28 2016 +0000
@@ -0,0 +1,118 @@
+/**********************************************************************
+* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a
+* copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense,
+* and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+* OTHER DEALINGS IN THE SOFTWARE.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+**********************************************************************/
+
+
+#include "OneWire/Masters/DS248x/DS2482EightChannel/DS2482EightChannel.h"
+
+using OneWire::OneWireMaster;
+using OneWire::DS2482EightChannel;
+
+
+//*********************************************************************
+DS2482EightChannel::DS2482EightChannel(mbed::I2C & i2c_bus, uint8_t adrs)
+:DS248x(i2c_bus, adrs)
+{
+}
+
+
+//*********************************************************************
+DS2482EightChannel::DS2482EightChannel(mbed::I2C & i2c_bus, I2CAddress adrs)
+:DS248x(i2c_bus, adrs)
+{
+}
+
+
+//*********************************************************************
+OneWireMaster::CmdResult DS2482EightChannel::selectChannel(uint8_t channel)
+{
+    OneWireMaster::CmdResult result;
+    uint8_t ch, ch_read;
+
+    // Channel Select (Case A)
+    //   S AD,0 [A] CHSL [A] CC [A] Sr AD,1 [A] [RR] A\ P
+    //  [] indicates from slave
+    //  CC channel value
+    //  RR channel read back
+
+    switch (channel)
+    {
+    default:
+    case 0:
+        ch = 0xF0;
+        ch_read = 0xB8;
+        break;
+    case 1:
+        ch = 0xE1;
+        ch_read = 0xB1;
+        break;
+    case 2:
+        ch = 0xD2;
+        ch_read = 0xAA;
+        break;
+    case 3:
+        ch = 0xC3;
+        ch_read = 0xA3;
+        break;
+    case 4:
+        ch = 0xB4;
+        ch_read = 0x9C;
+        break;
+    case 5:
+        ch = 0xA5;
+        ch_read = 0x95;
+        break;
+    case 6:
+        ch = 0x96;
+        ch_read = 0x8E;
+        break;
+    case 7:
+        ch = 0x87;
+        ch_read = 0x87;
+        break;
+    };
+
+    result = sendCommand(ChannelSelectCmd, ch);
+    if (result == OneWireMaster::Success)
+    {
+        result = readRegister(ChannelSelectReg, ch, true);
+        if (result == OneWireMaster::Success)
+        {
+            // check for failure due to incorrect read back of channel
+            if (ch != ch_read)
+            {
+                result = OneWireMaster::OperationFailure;
+            }
+        }
+    }
+
+    return result;
+}